Control method for brown spot of spinach
Convolvulus brown spot can harm sweetpotato Control methods: 1 Select resistant varieties; 2 Seedlings from disease-free plants are soaked in warm water at 48 degrees Celsius for 30 minutes before seeding; 3 pay attention to field drainage, plant ventilation; 4 In the initial stage of the disease, spray 58% of methyl frost wettable powder 600-700 times, or 64% of antimony wettable powder 500 times, 50% of methyl frost wettable powder 600-700 times, or 40% of ethyl phosphorus Al wettable powder 250-200 times, or 72.2% Preclo 800-1000 times, or 75% chlorothalonil wettable powder 500-600 times, spray every 7-10 days, continuous Spray 2-3 times. Home Safe,Digital Lock Safes,Rifle Safe,Black Color Safes Hebei Tiger Brand Group Jia Bao Cabinet Industry Co. LTD , https://www.cntigersafe.com